Although the risk of skyscrapers collapsing due to such motions is deemed small, the government estimate shows that the top floors of such buildings in Japan’s three megalopolises could move 2 to 6 meters in each swing. Such motions could topple shelves and move furniture and office machines violently, and people would find it almost impossible to walk. People may be injured in falls, hit by swaying household items or trapped in elevators, while ceilings could cave in, the report said.